ScienceDaily: Top Science News |
- Memory in adults impacted by versions of four genes
- Nanoparticles home in on brain tumors, boost accuracy of surgical removal
- Blood type A may predispose to some rotavirus infections
- New genes linked to brain size, intelligence
| Memory in adults impacted by versions of four genes Posted: 15 Apr 2012 12:13 PM PDT Scientists have advanced understanding of the genetic components of Alzheimer's disease and of brain development with two new studies. The first study has found that certain versions of four genes may speed shrinkage of a brain region involved in making new memories. The brain area, known as the hippocampus, normally shrinks with age, but if the process speeds up, it could increase vulnerability to Alzheimer's disease, the research suggests. The second article identifies two genes associated with intracranial volume -- the space within the skull occupied by the brain when the brain is fully developed in a person's lifespan, usually around age 20.  |
| Nanoparticles home in on brain tumors, boost accuracy of surgical removal Posted: 15 Apr 2012 12:13 PM PDT Like special-forces troops laser-tagging targets for a bomber pilot, tiny particles that can be imaged three different ways at once have enabled scientists to remove brain tumors from mice with unprecedented accuracy.  |
| Blood type A may predispose to some rotavirus infections Posted: 15 Apr 2012 12:13 PM PDT Whether you become infected by some strains of rotavirus may depend on your blood type. Some strains of rotavirus find their way into the cells of the gastrointestinal tract by recognizing antigens associated with the type A blood group, a finding that represents a new paradigm in understanding how this gut pathogen infects humans, said researchers.  |
| New genes linked to brain size, intelligence Posted: 15 Apr 2012 12:01 PM PDT A global team has mapped the human genes that boost or sabotage the brain's resistance to a variety of mental illnesses and Alzheimer's disease. The study also uncovered new genes that explain individual differences in brain size and intelligence.  |
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